According to Wikipedia, a cryptocurrency is "a digital asset designed to work as a medium of exchange that uses cryptography to secure its ...
source https://www.google.com/url?rct=j&sa=t&url=https://www.advisorperspectives.com/dshort/updates/2019/07/31/the-three-largest-cryptocurrencies%3Futm_source%3Ddshort_feed%26utm_medium%3Drss%26utm_campaign%3Ditem_link&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNH3HskqsdXguMqNAmL16KVtHvRGBw
